import 'package:enjoy_plus_bryant/utils/http.dart';
import 'package:enjoy_plus_bryant/utils/toast.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import 'package:permission_handler/permission_handler.dart';

class LocationList extends StatefulWidget {
  const LocationList({super.key});

  @override
  State<LocationList> createState() => _LocationListState();
}

class _LocationListState extends State<LocationList> {
  String apiKey = '1cadc5d152c7b1e470c4f5fa6e8754ba';
  String baseUrl = 'https://restapi.amap.com/v3';
  // 获取当前位置
  String address = '';
  // 周边小区
  List nearbyCommunities = [];

  // 测试位置权限有没授权
  Future<void> requestLocationPermission() async {
    PermissionStatus status = await Permission.location.request();
    if (status.isGranted) {
      // 权限授予
      // ToastUtil.showSuccess('位置权限授予');
    } else {
      // 权限未授予
      ToastUtil.showError('位置权限未授予, 请去设置中心开启');
    }
  }

  /**
 * 异步获取当前设备的位置信息。
 * 此方法首先根据设备的平台（Android、iOS/macOS 或 Web）配置不同的定位设置，
 * 然后使用这些设置获取设备的当前位置，并处理位置信息或异常。
 */
  Future<void> getCurrentLocation() async {
    // 稍后赋值
    late LocationSettings locationSettings;

    if (defaultTargetPlatform == TargetPlatform.android) {
      // 针对Android平台，设置高精度定位、100米距离过滤、强制使用位置管理器等
      locationSettings = AndroidSettings(
        accuracy: LocationAccuracy.high,
        distanceFilter: 100,
        forceLocationManager: true,
        intervalDuration: const Duration(seconds: 10),
        foregroundNotificationConfig: const ForegroundNotificationConfig(
          notificationText:
              "Example app will continue to receive your location even when you aren't using it",
          notificationTitle: "Running in Background",
          enableWakeLock: true,
        ),
      );
    } else if (defaultTargetPlatform == TargetPlatform.iOS ||
        defaultTargetPlatform == TargetPlatform.macOS) {
      // 针对iOS和macOS平台，设置高精度定位、健身活动类型、100米距离过滤等
      locationSettings = AppleSettings(
        accuracy: LocationAccuracy.high,
        activityType: ActivityType.fitness,
        distanceFilter: 100,
        pauseLocationUpdatesAutomatically: true,
        // 只有在应用在后台启动时才设置为true
        showBackgroundLocationIndicator: false,
      );
    } else if (kIsWeb) {
      // 针对Web环境，设置高精度定位、100米距离过滤、5分钟的最大年龄等
      locationSettings = WebSettings(
        accuracy: LocationAccuracy.high,
        distanceFilter: 100,
        maximumAge: const Duration(minutes: 5),
      );
    } else {
      // 对于其他平台，默认设置高精度定位和100米距离过滤
      locationSettings = const LocationSettings(
        accuracy: LocationAccuracy.high,
        distanceFilter: 100,
      );
    }

    try {
      // 使用配置好的定位设置获取当前位置
      Position position = await Geolocator.getCurrentPosition(
        locationSettings: locationSettings,
      );
      // 显示成功获取到的纬度和经度
      ToastUtil.showSuccess('${position.latitude}, ${position.longitude}');
      // reverseGeocoding(40.065956, 116.350077);
    } catch (e) {
      // 处理可能出现的异常
      ToastUtil.showError('获取位置信息失败');
    }
  }

  // 根据经纬度获取地址信息
  Future<void> reverseGeocoding(double latitude, double longitude) async {
    String url =
        // 拼接了baseUrl（有https://）， 不会用封装里面的基地址(dio请求库，axios请求库底层都这样做了)
        '$baseUrl/geocode/regeo?key=$apiKey&location=$longitude,$latitude';
    try {
      var res = await http.get(url);
      print(res);
      print(res['regeocode']['formatted_address']);
      setState(() {
        address = res['regeocode']['formatted_address'];
      });
    } catch (e) {
      print('查询过程中出现错误: $e');
    }
  }

  // 根据坐标获取周边小区
  Future<void> queryNearbyCommunities(double latitude, double longitude) async {
    String url =
        '$baseUrl/place/around?key=$apiKey&location=$longitude,$latitude&radius=500&types=小区';
    try {
      var response = await http.get(url);
      setState(() {
        nearbyCommunities = response['pois'];
      });
    } catch (e) {
      print('查询过程中出现错误: $e');
    }
  }

  List<Widget> _buildCommunityItem(List community) {
    List<Widget> items = [];

    for (var item in community) {
      items.add(
        GestureDetector(
          onTap: () {
            Navigator.pushNamed(
              context,
              '/building_list',
              arguments: {'point': '${item['name']}'},
            );
          },
          child: Container(
            color: Colors.white,
            padding: const EdgeInsets.all(10),
            child: Row(
              children: [
                Expanded(child: Text('${item['name']}')),
                Row(
                  children: [
                    Icon(
                      Icons.arrow_forward_ios,
                      size: 16,
                      color: Colors.black,
                    ),
                  ],
                ),
              ],
            ),
          ),
        ),
      );
    }

    return items;
  }

  @override
  void initState() {
    super.initState();
    // requestLocationPermission();
    // getCurrentLocation();
    reverseGeocoding(22.928305, 113.207187);
    queryNearbyCommunities(22.928305, 113.207187);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('选择社区')),
      body: ListView(
        padding: const EdgeInsets.all(10),
        children: [
          const Row(
            children: [Text('当前地址', style: TextStyle(color: Colors.grey))],
          ),
          const SizedBox(height: 10),
          Container(
            color: Colors.white,
            padding: const EdgeInsets.all(10),
            child: Row(
              children: [
                Expanded(child: Text(address)),
                Row(
                  children: [
                    Icon(Icons.location_searching_outlined, color: Colors.blue),
                    SizedBox(width: 2),
                    Text('重新定位', style: TextStyle(color: Colors.blue)),
                  ],
                ),
              ],
            ),
          ),
          const SizedBox(height: 10),
          const Row(
            children: [Text('附近社区', style: TextStyle(color: Colors.grey))],
          ),
          const SizedBox(height: 10),
          ListView(
            shrinkWrap: true,
            physics: const NeverScrollableScrollPhysics(),
            children: _buildCommunityItem(nearbyCommunities),
          ),
        ],
      ),
    );
  }
}
